I have never owned a hand held "hiking/ personal outdoor" gps. I have a loki research gps/ arts piggybacked gps unit for my rocket recovery which (as far as im aware) simply gives you gps coordinates of the last known location. Clearly I am speaking in hypotheticals because ive never used one before and havent built the rocket yet. If this is true I would need something like google earth or a hand held gps to type in those coordinates in order to locate and recover the rocket, correct? Does anyone know if the iPhone app "google earth" can do this or would i need to buy a cheap garmin? Thanks for any help you can give me.